(r) a common hydrocarbon elastomer.

A type of rubber like material that is okay for use with petroleum products.

Also called "Buna-N." Nitrile is a low grade rubber common in older vehicles' fuel systems and is not as ideal for use with biodiesel as the higher grade synthetics. For this reason, it is recommended that nitrile and natural rubber fuel system components be replaced with more suitable fluoropolymers.

a very strong glove but it is not necessary for all applications

(Buna-N) The most commonly used Elastomer for products because of its resistance to petroleum fluids, good physical properties and useful temperature range.

A synthetic rubber material that offers chemical and abrasion resistance-a very good general-duty glove. Nitrile also provides protection from oils, greases, petroleum products and some acids and caustics.

(chemical identification: butadiene acrylonirile, Buna N, - NBR): is a copolymer of Butadiene and Acrylonitrile. Most nitrile compounds have a relatively high acrylo content, making them exceptionally resistant to petroleum-base oils and hydrocarbon fuels over a temperature range of -40F to +250F.

A synthetic rubber that protects against a wide range of solvents and chemicals and also resists punctures, cuts, snags and abrasion

This is a rubber-like man-made material used extensively in gasket and sealing applications.

a synthetic rubber co-polymer of acrylonitrile and butadiene.